>>Cichlids in general are cautious and many do not display themselves unless there are other "dumber" fish which may present themselves as the first target of a predator-<< So intelligence is another category! :-) I would suspect that *pulling* the apisto out into the open to make it more observable would be the first objective. Filling additional strata for aesthetic purposes would be secondary. Tetras seem to be a common choice followed by danios and then guppies (pure anecdotal assumptions here). But if we revisit the purpose or definition of a dither fish, some of those may not be optimal choices, at least for apistos. Tetras, for example, occure naturally in most cichlid habitats, they're inexpensive and don't bother the lower strata fish for the most part. But is a tetra an ideal dither fish? What about a dwarf gorami? Or guppies? Or maybe different dwarf cichlids? Are they better or worse? But rather than having me going on and on and on.... What different dither fish have people used and what were the results? Bill Vannerson McHenry, IL USA william_vannerson@ama-assn.org